Apparatus for making threaded joints incorporating a make-up spe

Details Apparatus for making threaded joints incorporating a make-up spe Apparatus for making threaded joints incorporating a make-up spe

1981-04-10

1983-08-30

Chin, Gary

Boots, shoes, and leggings

7386225, 29240, 29407, B25B 2314, G01L 524

Patent

active

044020520

ABSTRACT:
An apparatus is provided for controlling the speed of rotation of a joint member during the operation of making a threaded joint. At lower speeds of rotation, a counter means receives clock pulses generated at a predetermined frequency and counts down from a stored value representing the elapsed time for a maximum rate at which turn signal pulses generated during predetermined increments of rotation of the joint member should be generated. If the elapsed time between the turn signal pulses is less than or equal to the stored time, a signal is generated to slow down the joint making operation. At higher speeds of rotation, a counter means receives the turn signal pulses and counts down from a stored value representing the maximum number of turn signal pulses which should be generated in a predetermined time interval. If the turn signal pulse total exceeds the maximum number during the predetermined time interval, the slow down signal is generated.

REFERENCES:
patent: 3368396 (1968-02-01), Burkleo et al.
patent: 3606664 (1971-09-01), Weiner
patent: 3745820 (1973-07-01), Weiner
patent: 3869019 (1975-03-01), Cardani
patent: 4091451 (1978-05-01), Weiner et al.
patent: 4176436 (1979-12-01), McCombs et al.
patent: 4208775 (1980-06-01), McCombs et al.
patent: 4210017 (1980-07-01), Motsinger

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